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Finding the Fourth Proportional to 676.62, 933.32 and 629.74

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Solution

The fourth proportional to 676.62, 933.32 and 629.74 is: 868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.62 : 933.32 = 629.74 : x
  2. Step 2: Convert to fraction form
    676.62/933.32 = 629.74/x
  3. Step 3: Cross multiply
    676.62x = 933.32 × 629.74
  4. Step 4: Simplify right side
    676.62x = 587,748.94
  5. Step 5: Solve for x
    x = 587,748.94/676.62
  6. Step 6: Final answer
    x = 868.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.